Why should he want them to believe his motives were entirely altruistic?

If true, it shows that Brus' motivations were not entirely altruistic.

Indeed, most companies admit that their workforce improvement projects are not entirely altruistic.

Jeff Ralston was not being entirely altruistic when he offered his services as a human guinea pig.

Others I communicated with seemed to be entirely altruistic in their motivation - or so they claimed.

These days, press critic is Simpson's favorite role - if not, it might be said, for entirely altruistic reasons.

The black farmers soon realized that their admission into the farming neighborhood was not entirely altruistic.

Of course, these donations are not entirely altruistic.

The Western proposals for help on health matters for the developing world are not entirely altruistic.

He was not being entirely altruistic - there was money to be made.